An Efficient ARQ for Multi-Hop Underwater Acoustic Channel with Long Propagation Delay and High Bit-Error Rate

  • Lee, Jae-Won (School of Electronics Engineering College of IT Engineering, Kyungpook National University) ;
  • Jang, Youn-Seon (Department of Electronics Engineering, Chungnam National University) ;
  • Cho, Ho-Shin (School of Electronics Engineering College of IT Engineering, Kyungpook National University)
  • Received : 2011.01.08
  • Accepted : 2011.02.15
  • Published : 2011.02.28


In the underwater communications, the acoustic channel is in poor communication conditions, such as long propagation delay, narrow bandwidth, and high bit-error rate. For these bad acoustic channels, we propose an efficient automatic repeat request (ARQ) for multi-hop underwater network by using the concepts of concurrent bi-directional transmission, multiple sub-packets, and overhearing data packet instead of the acknowledgement signal. Our results show that the proposed ARQ significantly reduces the transmission latency especially in high BER compared with the existing Stop and Wait ARQ.



Supported by : Agency for Defense Development


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